package com.fcat.springboot.core.util;

import com.fcat.springboot.redis.service.RedisService;
import com.fcat.springboot.redis.service.impl.RedisServiceImpl;
import com.redis.common.TokenInfo;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

@Component
public class SpringbootUtil implements ApplicationContextAware {
    private static final Logger LOG = LoggerFactory.getLogger(SpringbootUtil.class);
    private static ApplicationContext applicationContext;
    public static final String  tokenUserMap = "token:tokenUserMap";
    public static final String AUTHORIZATION_HEADER = "Authorization";
    private final String userTokenMapInRedis = "token:userTokenMap";
    public static TokenInfo parseToken(){
        String token = getCurrentToken();
        RedisService redisService = SpringbootUtil.getBean(RedisService.class);
        TokenInfo tokenInfo =  (TokenInfo) redisService.mapGet(tokenUserMap,token);
        if(tokenInfo==null)throw new RuntimeException("no token");
        return tokenInfo;
    }
    public static String getCurrentToken() {
        HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes())
                .getRequest();
        String token = request.getHeader(AUTHORIZATION_HEADER);
        return token;
    }
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        if (SpringbootUtil.applicationContext == null) {
            SpringbootUtil.applicationContext = applicationContext;
            LOG.info("获取applicationContext成功："+applicationContext);
        }
    }

    // 获取applicationContext
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    // 通过name获取 Bean.
    public static Object getBean(String name) {
        return getApplicationContext().getBean(name);
    }

    // 通过class获取Bean.
    public static <T> T getBean(Class<T> clazz) {
        return getApplicationContext().getBean(clazz);
    }

    //通过name,以及Clazz返回指定的Bean
    public static <T> T getBean(String name, Class<T> clazz) {
        return getApplicationContext().getBean(name, clazz);
    }


}
